linux-kernel - [PATCH RESEND] arm64: dts: renesas: r8a77990: Add Ebisu-4D board support

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Date:   Mon,  2 Oct 2023 13:34:41 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-renesas-soc@...r.kernel.org
Cc:     Takeshi Kihara <takeshi.kihara.df@...esas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH RESEND] arm64: dts: renesas: r8a77990: Add Ebisu-4D board support

From: Takeshi Kihara <takeshi.kihara.df@...esas.com>

Add initial support for the Renesas Ebisu-4D development board.

The Ebisu-4D board is very similar to the Ebisu board, but the memory
configuration is different.

  - The memory map of Ebisu-4D board is as follows:
      Bank0: 2 GiB RAM : 0x000048000000 -> 0x000bfffffff

  - The memory map of Ebisu board is as follows:
      Bank0: 1 GiB RAM : 0x000048000000 -> 0x0007fffffff

Signed-off-by: Takeshi Kihara <takeshi.kihara.df@...esas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
[wsa: rebased]
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---

Resending this patch because I want to utilize all 2GB of memory on my
Ebisu. Since nobody updated U-Boot to handle different RAM sizes on
Ebisu in the last 4.5 years, let's add the Ebisu-4D as a seperate board.


 arch/arm64/boot/dts/renesas/Makefile          |  1 +
 .../boot/dts/renesas/r8a77990-ebisu-4d.dts    | 25 +++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a77990-ebisu-4d.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 7114cbbd8713..ad8f13f9907a 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -55,6 +55,7 @@ dtb-$(CONFIG_ARCH_R8A77980) += r8a77980-v3hsk.dtb
 dtb-$(CONFIG_ARCH_R8A77980) += r8a77980a-condor-i.dtb
 
 dtb-$(CONFIG_ARCH_R8A77990) += r8a77990-ebisu.dtb
+dtb-$(CONFIG_ARCH_R8A77990) += r8a77990-ebisu-4d.dtb
 
 dtb-$(CONFIG_ARCH_R8A77995) += r8a77995-draak.dtb
 
diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu-4d.dts b/arch/arm64/boot/dts/renesas/r8a77990-ebisu-4d.dts
new file mode 100644
index 000000000000..9f5bc7a7734f
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu-4d.dts
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the Ebisu-4D board
+ *
+ * Copyright (C) 2018 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r8a77990-ebisu.dts"
+
+/ {
+	model = "Renesas Ebisu-4D board based on r8a77990";
+	compatible = "renesas,ebisu", "renesas,r8a77990";
+
+	memory@...00000 {
+		device_type = "memory";
+		/* first 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x78000000>;
+	};
+};
+
+&pciec0 {
+	/* Map all possible DDR as inbound ranges */
+	dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x80000000>;
+};
-- 
2.30.2